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GeofenceApp is an application designed for map positioning and sharing with friends. It supports real-time location tracking, geo-fence settings, and location sharing invitations between friends.

✨ Features:
🔐 Firebase account login and registration

Register/Login via Email

You can set nickname and avatar, and synchronize them to Firebase Firestore

👥 Friend invitation and location sharing

Enter Email to invite other users to share location

Full management of invitation status (pending, accepted, rejected)

Cancel or re-invite at any time

🗺 Real-time map showing location

Show your location and the location of friends who have accepted sharing

Automatically upload the latest location to the cloud every 60 seconds

Support marker icons, user avatars, and relative time display

📍 Geofence Management

Set multiple geofences for each friend

Supports entering/leaving zone notifications (selectable events)

Geofences are stored in Firestore and registered to the local device, running continuously in the background

Click on the map to create or drag to adjust the fence position and radius

🔔 FCM push notification integration

Send real-time geofence trigger notifications via Firebase Cloud Messaging

The App automatically registers and uploads the device's FCM Token

🕓 History and route query

Query the historical movement records of friends on a certain day

Similar points on the same day will be merged into a cluster (default distance 60 meters)

Display time intervals and stop locations, and mark them on the map

⚙️ Account settings

Ability to update nickname and avatar (cropping function)

Supports logging out and clearing all geo-fences on the local machine

🔒 Complete permissions processing

Foreground/background location permission instructions and guidance

Android 13 and above automatically handle notification permissions